Jim Cramer identifies powerful currents in the markets and how to navigate them.

Today was the most bullish day yet in this post-election rally, Jim Cramer told his Mad Money viewers Tuesday. There are some unbelievable riptides that are upending the markets, he said, but the real action is happening in the bond market.

Cramer said that a week ago, most fund managers were betting on a Hillary win, which would have been likely followed by more gridlock and slow economic growth.

But with Trump planning on cutting taxes and rebuilding infrastructure, there will be a lot of borrowing -- which is why interest rates have spiked over the past week.

More borrowing means both higher interest rates and higher inflation, Cramer explained. Higher rates are great for the banks, which explains their 14% rally since the election. But it also means the earnings of fast-growing stocks, such as Facebook (FB) , an Action Alerts PLUS holding, could be eroded and is therefore worth less than it was a week ago.

Under Trump, Cramer said, investors can expect the banks, transports and the industrials all to rally, while tech and the drug stocks will be far less impressive. Oil will also likely do well under Trump, as more growth means more demand for crude.

Off the Charts: Natural Gas

In the "Off The Charts" segment, Cramer checked in with colleague Carly Garner over the chart of natural gas which, as Garner previously forecast, has recently seen a crash "of epic proportions."

According to Garner, the current floor for natural gas at $2.75 isn't likely to hold, as historically, the commodity has seen declines between Nov. 24 and Dec. 4 in 12 of the past 15 years. She also doesn't see much upside if gas were to bounce, as it has ceilings of resistance at $3.02 and $3.15.

Cramer explained that natural gas is suffering from a condition known as contango, a natural force in all commodities that makes them more expensive in the future thanks to the cost of storing and insuring the commodity while it is held. This is not something even seasonal trends can buck, as most of the seasonal demand is already baked into prices.

Is natural gas falling because Trump as pledged to revive coal?

Cramer said that's unlikely, as many coal plants have already been retired and the time needed to build new ones would be substantial. Plus, with gas prices so low, there's simply no incentive for utilities to adjust their environmentally friendly march toward the future.